Easy line bolt



J. P. DRY

EASY LINE BOLT Nov. 20, 1951 Filed July 21, 1948 INVENTOR.

faym% ATTD RN EYS Patented Nov. 20, 1951 UNITED STATES" PATENT OFFICE{[j:,

EASY LINE BOLT John P. Dry, Winters, Tex. Application July 21, 1948,Serial riaaaezz This invention relates to a bolt, and moreparticularlyto a bolt for use by an automobile mechanic in replacing an enginegasket.

As heretofore proposed, it has been the practice in replacing certainof'the gaskets in an internal combustion engine to'cementthe gasket tothe engine oil pan and then attach the oil pan to the crank case. Thisis very inconvenient, since it is difiicult to keep the gasket alignedwith the oil pan and crank case. It has been found that by using thealigmnent bolts of the present invention, the engine gasket can bereplaced without diiiiculty.

1 Accordingly, an object of theinvention is to provide a bolt formaintaining the gasket in alignment with the engine crank case and oilpan while the mechanic is in the act of positioning the usual boltsemployed for securing the oil pan to the crank case.

Another object of the invention is to provide an alignment bolt whichmay readily and easily be operated by hand to maintain the gasket inposition on an engine crank case while the mechanic moves the oil paninto position to be attached to the crank case.

A further object of the invention is to provide an alignment bolt whichis extremely simple and inexpensive to manufacture.

Other objects and advantages of the invention will be apparent duringthe course of the following description.

In the accompanying drawings forming a part of this application, and inwhich like numerals are employed to designate like parts throughout thesame:

Figure 1 is a fragmentary side elevational view illustrating a pluralityof alignment bolts positioned to align the gasket with the engine crankcase, the position of the oil pan when assembled being shown in dottedlines;

Figure 2 is an enlarged fragmentary side elevational view partly insection, illustrating an alignment bolt maintaining a gasket contiguousto and in alignment with a crank case;

Figure 3 is an enlarged fragmentary side elevational view partly insection illustrating an alignment bolt for use in maintaining a gasketin alignment with the crank case and oil pan; Figure 4 is a top planview of the alignment bolt;

Figure 5 is an enlarged sectional view taken on the li 5--5 of Figure 2.

Referring in detail to the drawings, the numeral I0 designates a portionof a crank case of a motor vehicle internal combustion engine 2 Claims.

9, which is formed with the usual flange II that in turn is providedwith a plurality of spaced openings I2 for the reception of the usualsecuring bolts employed in securing the oil pan I3 to the crank case I0.i The openings l2 are threaded to receive the threads of the usualsecuring bolts. The oil pan I3 is provided with the conventional flangeI 4 which has openings I5 that are arranged so that they will align orregister with the openings I2 of the crank case. Normally interposedbetween the flange II of the crank case It] and thefiange I4 of the oilpan I3 is a conventional packing member or gasket I6 which is alsoprovided with openings Ilthat align with the openings I2 in the flangeHand the openings IS in the flange I4.

In order to maintain the gasket I6 in alignment with'the crank case I0and oil pan I3,"a plurality of alignment bolts I8 are provided. Each ofthe bolts I8 is provided with a threaded end 8 for threaded engagementwith the threaded openings I2 of the flange II. The bolt I8 includes acylindrical portion I5 adjacent the threaded end 8 thereof, and formedon the other end of the bolt is a cylindrical head 20 of a diametergreater than the cylindrical portion I9. The exterior surface of thehead 20 is knurled, as at 2|, to facilitate manual turning of the boltby a mechanic. The head 20 is also provided with atransversely-extending slit or kerf 22 for the reception of an end of ascrew driver for tighting the bolt I8. Circumposed on the cylindricalportion I 9 of the alignment bolt I 8 is a tapered conical helical orcoil spring 23 for a purpose to be hereinafter described. The coilspring 23 has a portion 24 arranged in abutting relation to the head 20and has one end 3 secured, as by welding, in a socket 4 of the bolt IS.The other end 5 of the spring 23 is secured in a socket 6 of the boltI8. The coil spring 23 is of such a shape that its diameter graduallyincreases from its end 24 to the other end thereof.

In using the alignment bolt I8, the gasket I5 is cemented and positionedcontiguous to" the flange II of the crank case l0 so that its openingsI! are in alignment with the openings I2 in the flange II. The end 8 ofthe alignment; bolt is then threaded into the openings I2 of the flangeII so that the spring 23 will bias or hold the gasket I6 in position. Aplurality of bolts IB are screwed into certain of the openings I2 byeither a manually-directed pressure on the knurled head 2 I, or a screwdriver bit can be inserted in I 3 the kerf 28 of the bolt 68 to rotatethe latter. Next, the oil pan I3 is moved into position below the crankcase l and gasket 16 so that the heads 20 of the bolts l8 pass throughthe openings i in the flange M of the oil pan [3, the diameter of theholes I5 being greater than the diameter of the head 20, as shown inFigure 3. With the oil pan so positioned, the conventional stud boltsare passed through the remaining openings of the flange H of the oil pani3 and threaded into the empty threaded openings l2 of the crank case Ii. Then, after several of the usual stud bolts have been inserted, thealignment bolts I 8 are removed from threaded engagement with theopenings 12 in the crank case and each is replaced by a conopenings fromwhich the aligned bolts iii are removed. The diameter of the holes I5 inthe alignment bolts l8 are unscrewed from the open- 'ings 1.2 in theflange H.

,From-tthe foregoing description and astudy of the drawings, it will beapparentthat I haveproe vided a new construction. It is, of course, tobe understood that I reserve the'right to make such changes in the form,construction, and arrangement of parts as will not depart from thespirit of the invention or the scope of the appended claims.

I claim:

1. In a bolt provided with an exteriorlythreaded end, 'a'cylindricalportion extending from said threaded end and having a smaller diameterthan the threaded end, a knurled head on the other end of said bolt forrotating the latter, said cylindrical portion having an inwardlyextending socket adjacent said head and said threaded end and saidsockets extending inwardly of 'said portion from opposite sides thereofand resilient means embodying a conical '15 ventional stud bolt which isthreaded into the helical spring circumposed on said cylindrical portionfor biasing a sealing member away from said head and the ends of saidsprings being fixed in the sockets in said portion with the base of theconical spring adjacent said threaded end.

2. In a bolt provided with an exteriorlythreaded end, a cylindricalportion extending from said threaded end and having a smaller diameterthan the threaded end, a knurled head on the other'end of said boltforjrotating the latter, said cylindrical portion having an inwardlyextending socket adjacent said head and said threaded end and saidsockets extending inwardly of said portion from opposite sides thereofand resilient means embodying a conical helical spring circumposed onsaid cylindrical portion for biasing a sealing member away from saidhead and the ends of said springs being fixed ,in the sockets in saidportion with the base of the conical spring adjacent'said threaded end,there being a transversely-extending slit in said head for-the receptionof an end of a tool.

JOHN 'P. DRY.

1 REFERENCES .CITED The following references are of record in the fileof this patent:

UNITED STATES PATENTS Burrows Dec. 13. .1949

